Glass-beveling machine



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P. WIEDERER' GLASS BEVELING' MACHINE..

Patented Feb. 10, 189 1.

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P. WIEDBRER. emsssnvmiue MACHINE.

No. 446,196. Patented Feb. 10, 18911.

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P. WIEDERER.

GLASS BBVELING MACHINE. I No. 446,196. Patented Feb. 10, 1891.

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. A TTOHNEYS UNITED STATES PATENT OFFICE.

PETER \VIEDERER, OF STAPLETON, NElV YORK.

GLASS-BEVELING MACHINE.

SPECIFICATION forming part of Letters Patent No. 446,196, dated February 10, 1891.

Application filed May 1, 1890- Serial No. 350,183. (No model.)

To all whom it may concern.-

Be it known that I, PETER WIEDERER, of Stapleton, in the county of Richmond, in the State of New York, a'citizen of the United States, have invented certain new and useful Improvements in Glass-Beveling Machines, of which the following is a specification;

This invention relates to an improved machine for beveling the edges of glass plates.

The object of my invention is to provide a glass-bevelin g machine which is so constructed that the edge of the glass is held with a uniform pressure throughout the entire grinding or beveling operation in contact with the abrading-surface, and is automatically thrown out of contact with said abrading-surface when the edge has been beveled to the desired degree.

A further object of my invention is to provide means for facilitating the adjustment of the parts of the machine to accomplish the above object.

The invention consists in the construction and combination of parts and details, as will be fully described hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of my improved glass-beveling machine, parts being in section. Fig. 2 is a front elevation of the same, parts being broken out. Fig. 3 is a side elevation of the same, parts being broken out. Fig. at is an enlarged detail vertical longitudinal sectional view of one end of the presser, showing a modified manner of weighting the same, and also showing in detail the automatic releasing-latch. Fig. 5 is an enlarged detail plan view of the glass-clamping plate. Fig.6 is a detail side view of the rock -shaft for supporting the glass-clamping device.

Similar letters of reference indicate corresponding parts.

The grindstone A, iron roller, or other abrading-wheel is fixed on a shaft A, journaled in suitable boxes on the frame 13 of the machine. On one end of said shaft a driving-belt pulley B is fixed, and on the other end the wheel B is fixed, which is provided with a camgroove-B into which a pin B projects from an arm 13 on the frame B, so that when the shaft is rotated it is at the same time reciprocated in the direction of its length, thereby preventing certain parts of the grindstone from wearing off more rapidly than others.

- On the sides of the frame 13 two supporting-rails C are secured horizontally, each provided in its outer surface with a longitudinal dovetailed groove, in which a block D is mounted to slide. Said rails O are each pro vided with a graduated scale CL to facilitate the exact adjustment of the block D.

The block D is provided with a vertical dovetailed groove, in which a dovetailed standard E can slide vertically, which standard can be locked in place by meansof a nut E which also serves for locking the plateD in place on the rail 0. The.block D is provided with a graduated scale D to facilitate adjusting the standard E in exact position. The standard E is provided at its upper end with an arm E, having a notch E in its upper edge. A shaft F is provided a short distance from each end with a collar F and a short distance from each collar with an up.

wardly-projecting pin G, having an annular groove G at its upper end. Between the pins G a plate II is secured on the shaft F, and on the upper surface of said platea sheet H of rubber is fastened, which forms acush ion for the glass plate I. Upon the glass plate I, resting upon said rubber sheet H, a metal plate J is placed, to the under side of which a cushion-sheet J 4 of rubberis secured, that rests upon the upper surface of the glass plate I. Said plate J is provided with two apertures J, through which the pins G can pass, and adjacent to each aperture J a latch J is pivoted on the upper surface of the plate J, which latches each have a notch J 3 for receiving part of the pinG. The edges of the latches J 2 are slightly beveled, so that when said latches are swung in the direction of the arrow 00, Fig. 5, the beveled edges,acting on the under sides of the heads formed on corresponding pins G, act as wedges and serve to press the top or clamping plate J firmly upon the glass plate I, whereby said glass plate is held firmly and rigidly between the plates H and J. The pivots formed by the ends of the shaft F are placed in the notches E of the arms E on the standards E, as shown in Fig. 3. The plates H and J are so arranged in relation to the shaft F, and the glass plate is clamped between them in such a manner'that the greater-weight will be to the left-hand side of the shaft F, Fig. 3, which thus descends until the left-hand edge of the glass rests upon an angle-bar K or other support held by thumb-nuts K on the slotted standards L. The angle-bar K or other support can be adjusted higher or lower on' said standards L, as may be required. The standards L are provided at their lower ends with rectangular projecting longitudinally-slotted arms L, provided with graduated scales L Screws M project from the top bars of the frame B through the slots of the arms L, and winged nuts M are screwed on i said screws and serve for clamping the arms L in place on the top parts of the frame B. The standards L can thus be adjusted a greater or less distance from the abrading-wheel, according to the size of the pane of glass, which adjustment is facilitated by the graduated scales L The presser bar or box N, which may be of any desired length, is provided on its under side with rollers N, adapted to run along the edges of guide bars or rails N secured transversely on the upper surface of the clampingplate J. The presser-bar N is connected with a rod 0, pivoted at its upper end to the ceiling or any other overhead support, so as to admit of swinging or sliding said presser-bar toward or from the abrading-wheel. A camlever O is pivoted to the rod 0 and adapted to act 011 the sliding sleeve 0 on the said rod 0, said sleeve resting on a spiral spring 0 the lower end of which rests upon the presserbar N. On one end of the presser-bar N a vertical guide P is fastened, in which is arranged a sliding latch-pin P, that is pressed downward by a spring P contained in the guide P. The lower end of the latch-pin projects into an aperture Q in the upper-clamping-plateJ, as shown in Fig. 4:. A trigger-pin R projects upward into said aperture Q from a bar R, held vertically adjustable by a screw R on a standard S, provided at its lower end with a'right-angled longitudinallyslotted arm S, which can be locked in place by a screw S on the top of one of the side bars of the frame B. The bar R is provided with a graduated scale, as shown in Fig. 3, to facilitate the adjustment of the triggerpin R.

If desired, the spring 0 acting on the presser-bar N, can be dispensed with, and said presser-bar can be Weighted with stones or blocks of metal to the desired degree, as shown in Fig. 4,

The operation is as follows: After the glass pane has been clamped between the plates H and J, the shaft F is placed upon the arms E of the standards E, the rear edge of the glass plate resting upon the angle-bar K and the front edge being slightly above the surface of the abrading-wheel. The rod 0, supporting the presser-bar, is now in vertical position, and does not press the edge of the glass against the abrading-wheel. The presser-bar N is then pushed in the direction of the arrow 00 Fig. 3, until it is in the position shown in Fig. 1, and presses the edge of the glass plate against the abradingture Q, rests on the upper end of the triggerpin B. As the edge of the glass pane is ground off, the presser-bar force's said glass pane downward, and as the plate J moves downward with the pane it follows thatthe fixed trigger-pin R must gradually push upward the latch-pin P. By the time that the glass has been ground off to such an extent as to have the desired bevel the glass pane and the clamping-plates H and J will have descended to such an extent that the triggerpin R has forced the latch-pin P out of the aperture Q in the plate J. At that instant the presser-bar N immediately slides in the inverse direction of the arrow 00 and as the pressure is removed from that edge of the glass pane resting against the stone the opposite heavier edge will swing downward upon the angle-bar K and the beveled edge will be raised from the stone or abrading-wheel. Thus there is no possibility of grinding off more from the edge of the glass pane than the desired bevel that is, the pane is lifted from the abrading-wheel as soon as the desired. bevel has been obtained. The pressure on the glass is at all times uniform, and as the glass pane is held between the rubber cushion-sheets there is no danger of breaking or cracking the glass. The operator then lifts the shaft F from the arms E and reverses it, so that the opposite edge of the pane will be above the abrading-wheel. The presser-bar N is moved in the direction of the arrow :0 the cam-lever O is pressed down, and the above operation repeat-ed. The operator then opens the latches J removes the clamping-plate J, and turns the glass pane ninety degrees, so as to bevel the other two edges, and so on.

The machine can easily be adjusted for panes of any desired size and for bevels of any desired width or angle.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- 1. In a glass-beveling machine, the combination, with an abrading-wheel, of a support for the pane of glass, a presser-bar for pressing an edge of the pane of glass upon the abrading-wheel, a latch on the presser-bar,

ITO

and a fixed trigger for operating said latch,

Substantially as set forth.

2. In a glass-beveling machine, the combination, with an abrading-wheel, of a clamping-plate for holding the pane of glass to be beveled, which clamping-plate is provided with an aperture, a presser-bar resting on said plate and having a latch-pin projecting into said aperture, and a trigger-pin projecting from the frame of the machine into the aperture in the plate, substantially as set forth.

3. In a glass-beveling machine, the combination, with an abrading-wheel, of vertically and horizontally adjustable standards, a glasspane support on the standards and additional adjustable standards, and a bar on said additional standards for supporting that edge of the glass opposite the one being acted upon by the abradingavheel, substantially as set forth.

4. In a gla'ss-beveling machine, the combination, with an abrading-wheel, of a glasssupport and a resser-bar adapted to act on the pane of glass and provided on its under side with rollers, substantially as set forth.

5. In a glass-beveling machine, the combination, with an abrading-wheel, of a glasssupport, a glass-clamping plate having rails on its upper surface, and a presser-bar provided on its under side with rollers adapted to run on said glass-clamping plate, substantially as set forth.

6. In a glass-beveling machine, the combination, with an abrading-wheel, of a glasssupport, a presser-bar having a latch-pin, and a vertically and laterally adjustable triggerpin on the frame, adapted to act on said latchpin on the presser-bar, substantially as set forth.

7. In a glass-beveling machine, the combination, with an abrading-wheel, of a presserbar, a swinging rod from which the presserbar is suspended, a spring resting on the presserbar, and means for increasing the pressure of said spring, substantially as set 'forth.

8. In a glass-beveling machine, the combination, with an abrading-wheel, of a presserbar, a swinging rod from which the presserbar is suspended, a spring resting on the presser-bar, a sliding sleeve on the rod, resting on said spring, and a cam-lever for pressing the sliding sleeve downward, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

PETER WIEDERER.

"Vitnesses:

OSCAR T. GUNZ, M. REIMHERR. 

